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Table 4 An example of calculating the symptom score. For a 45 years old gentleman presenting with the following symptoms for the past 5 months. The Symptom Scores will be calculated as follows:

From: Prospective Acid Reflux Study of Iran (PARSI): Methodology and study design

Symptoms Frequency Intensity Severity
Heartburn None (0) With specific food (1) Less than weekly (2) 1–3 times per week (3) Almost every day (4) Several times a day (2×) Do not feel it if don't think about it (2) Feel it, but not interfering with work and/or daily life (3) Interfering with work and/or daily life (4)
Acid regurgitation None (0) With specific food (1) less than weekly (2) 1–3 times per week (3) Almost every day (4) Several times a day (2×) Do not feel it if don't think about it (2) Feel it, but not interfering with work and/or daily life (3) Interfering with work and/or daily life (4)
Halitosis, None (0)   Less than weekly (1) 1–3 times per week (2) Almost every day (3) Several times a day (2×) Do not feel it if don't think about it (2) Feel it, but not interfering with work and/or daily life (3) Interfering with work and/or daily life (4)
Anorexia None (0)   Less than weekly (1) 1–3 times per week (2) Almost every day (3) Several times a day (2×) Although present but I take almost normal amount of food (2) I have cut my food intake (3) I am almost unable to take any food (4)
Belching None (0) With specific food or condition (1) Less than weekly (2) 1–3 times per week (3) Almost every day (4) Almost all day long (2×) Not interfering with work and/or daily life (2) Interfering with work and/or daily life (3)  
  1. Heartburn = 3*2*3 = 18
  2. Acid regurgitation = 2*2 = 4
  3. Halitosis = 3*2*3 = 18
  4. Anorexia = 3*3 = 9
  5. Belching = 4*2*2 = 16
  6. General Symptom Score (GSS) = Heartburn + Acid regurgitation + Halitosis + Anorexia + Belching = 18+4+18+9 +16 = 64